I'm trying not to be a nutrider here, but Choi Hong Hi claims that a number of TKD techniques were inspired by Taekyon techniques, but updated to be more effective and logical.
Either way, it looks to me like the influence was more conceptual. In other words, the techniques themselves look very un-similar, whereas it looks like the idea of the jumping spinning roundhouse kick is very much a Taekyon-inspired thing.

Another thing I noticed that was similar to TKD was the fact that the movements were mostly very soft and suddenly "exploded," and weren't just 100% hard all the time.

I'm trying not to be a nutrider here, but Choi Hong Hi claims that a number of TKD techniques were inspired by Taekyon techniques, but updated to be more effective and logical.
Either way, it looks to me like the influence was more conceptual. In other words, the techniques themselves look very un-similar, whereas it looks like the idea of the jumping spinning roundhouse kick is very much a Taekyon-inspired thing.

Another thing I noticed that was similar to TKD was the fact that the movements were mostly very soft and suddenly "exploded," and weren't just 100% hard all the time.

A project for those interested is to see when GM Ji Han-jae calims to add in Taekkyon kicking to HKD. Compare that to when TKD started expanding their kicking techniques. There is a belief that TKD took a lot of their kicks from HKD. Things to keep in mind that GM Won Kuk Lee claims that when he taught Chungdokwan, there were only 4-8 basic kicks (for the life of me I don't recall the actual number), but anyway they were pretty much the same kicks but used at different ranges. A couple of the founding fathers of TKD claim to have Takkyon experience, but have never proven that fully. Even in their beginnings they never showed such skills in their teaching. Anyway....there you go. Something to think about and prove right or wrong or neither. :)

Jeremy M. Talbott

Originally Posted by Phrost

"Bullshido isn't just a place to hang out when you're browsing the net. We really are trying to accomplish something fucking extraordinary here that nobody's ever had the balls to do before."

Originally Posted by D.Murray

"Which is better, to learn the truth, or to enjoy the illusion of being right when you are not?"

Originally Posted by hangooknamja88

My definition of Ki is our energy. it's rather hard to explain it in words. It's not some mystical type of energy like white people...